While appearing at the Council on Foreign Relations (CFR), Barack Obama’s top Homeland Security Advisor John Brennan was asked about the concerns raised by Rep. Michele Bachmann and four other Congressmen about the possibility of Muslim Brotherhood penetration of the U.S. Government. Brennan all but openly mocked Bachmann in his response.

The allegation that the Muslim Brotherhood is infiltrating the U.S. government lost further credibility on Wednesday when John Brennan, President Barack Obama’s top counterterrorism adviser, dismissed it out of hand.

At an event at the Council on Foreign Relations in Washington, an audience member asked Brennan about the request made by five House members — Reps. Michele Bachmann (R-Minn.), Trent Franks (R-Ariz.), Louie Gohmert (R-Texas.), Tom Rooney (R-Fla.) and Lynn Westmoreland (R-Ga.) — for the federal government to investigate the infiltration of the Muslim Brotherhood into its ranks.

The audience tittered at the question, and Brennan smirked before answering, indicating how little credibility the allegations have with the foreign policy establishment.

See for yourselves…

That’s rather funny because in 2010, while speaking at New York University, Brennan singled out ISNA President Ingrid Mattson, who was in the audience and identified her as a leader who has done great work with the Islamic Society of North America (ISNA), which is, incidentally, a Muslim Brotherhood organization.

In January 2009, Mattson delivered a prayer at the National Prayer Service, one of the events associated with the inauguration of President Barack Obama.

In June 2009, Obama advisor Valerie Jarrett invited Mattson to work on the White House Council on Women and Girls.

Mattson formerly served, along with ISNA’s past president Muzammil Siddiqi, on the board of trustees at the North American Islamic Trust, which has had close ties to both the Muslim Brotherhood and the now-defunct Holy Land Foundation for Relief and Development.

Gee, Mr. Brennan, perhaps it’s examples like these that cause you to scoff at Bachmann’s claims instead of actually having a legitimate retort of them.